The Heiss Island Imaging Photometer

该提案要求提供支助，以建立和安装一台增强型全天成像光度计(ASIP)，并调查与黑暗中的日边尖点和极冠太阳对齐弧线有关的各种现象。成像器将位于俄罗斯海斯岛，并将在冬季持续运行。海斯岛成像仪将构成全天成像仪链的最东端锚，目前延伸到加拿大的索鲁特湾，穿过格陵兰岛，一直延伸到挪威的斯瓦尔巴特群岛。除了用于研究尖点和极冠弧线的行为外，该成像仪还将能够以高时间分辨率探测日边极光，诊断与亚风暴有关的椭圆形扩张，探测近椭圆形区域的太阳排列的弧线，并在重新配置为极光斑点之前跟踪极冠斑块。海斯岛成像仪与DMSP和Polar卫星以及EISCAT和Svalbard非相干散射雷达一起使用，将使美国调查人员能够在这一拥有多种诊断技术的地区进行研究。这里提出的科学具体涉及1)理解极光椭圆形附近太阳对齐弧线的形成和运动，以及2)以高时间和空间分辨率成像尖端/裂隙区域的日侧瞬变事件，以调查合并是在多个地点进行还是在延伸的合并线上进行。需要资金来建造和安装成像仪，以及分析、解释和分发数据。此外，还要求为博士后的参与提供部分支持。

This proposal requests support to build and install an intensified all-sky imaging photometer (ASIP) and to investigate a variety of phenomena related to the dayside cusp in darkness and polar cap sun-aligned arcs. The imager will be located at Heiss Island, Russia and will operate continuously during the winter months. The Heiss Island imager will constitute the eastward most anchor of a chain of all-sky imagers currently extended for Resolute Bay, Canada, through Greenland and up to Svalbard, Norway. The imager, in addition of being used for studies of the cusp and the behavior of polar cap arcs, will be able to probe the dayside aurora with high temporal resolution, diagnose substorm related oval expansions, detect sun-aligned arcs in the near oval sector, and follow polar cap patches before being reconfigured into auroral blobs. The Heiss Island imager, used in conjunction with the DMSP and Polar satellites and with the EISCAT and Svalbard incoherent scattering radars, will allow US investigators to conduct research in this region populated by several diagnostic techniques. The science proposed here specifically deals with 1) understanding the formation and motion of sun-aligned arcs near the auroral oval and 2) imaging dayside transient events in the cusp/cleft region with high temporal and spatial resolution to investigate whether merging proceeds at multiple sites or instead over an extended merging line. Funds are requested for building and installing an imager, and analyzing, interpreting, and distributing the data. Additionally, partial support for post-doctorate participation is requested.